The BMW M5 4.4 V8 Bi-Turbo 462hp (F90 - 2017 - 2019) produces 462bhp and 650Nm in standard form. Our Stage 1 ECU tuning file raises output to 495bhp and 710Nm, a gain of 33bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.